drop dependency on symfony/polyfill-php56 and symfony/polyfill-php70

- raise dependency on twig 1.41
- raise dependency on egulias/email-validator 2.1.10
- raise dependency on doctrine/annotations 1.7

* Sat Sep 14 2019 Shawn Iwinski <shawn.iwinski@gmail.com> - 3.4.30-2
- Update autoloader generator to include self PSR-0, PSR-4, files, and classmap

ignore new dependency on symfony/polyfill-ctype

raise dependency on twig 1.35
raise dependency on polyfill 1.6
add php-symfony3-lock subpackage
improve autoloader generation to catch exception